Fist of the North Star

The remnants of mankind fight over whatever supplies of food and uncontaminated water still remain as the strong prey on the weak. Kenshiro is the successor to Hokuto Shinken , an ancient martial art of assassination that trains its practitioners to kill from within an opponent's body through the use of hidden meridian points. Kenshiro wishes to live his life in peace, but after he is separated from his fiancée Yuria by a jealous rival, he begins his journey to become the savior of the post-apocalyptic world, defending the weak and innocent from the many gangs and organizations that threaten their survival. Along the way, Kenshiro meets a young thief named Bat and an orphaned girl named Lin, who join him as his traveling companions and bear witness to Ken's many battles.

Kenshiro's many rivals and allies include the six grandmasters of Nanto Seiken , a rival assassin's art that split into two factions after the nuclear war, as well as his own "Brothers of Hokuto", who trained alongside him for the succession of Hokuto Shinken . Kenshiro's ultimate nemesis is his eldest brother-in-training Raoh , a warrior who broke the law of Hokuto Shinken by refusing to allow his fists to be "sealed", killing his master Ryuken and refusing to surrender the succession to Kenshiro. Raoh seeks to conquer the post-apocalyptic world as a warlord under the mantle of Ken-oh ( 拳王 , Ken Ō ; 'Fist King') , by challenging every martial artist he sees as a threat. After a long series of battles, Kenshiro emerges victorious over Raoh, who dies peacefully, and peace arrives in the post-apocalyptic world, concluding the first half of the story.

The second half begins several years later after a tyrannical empire under the name of the Celestial Empress has risen to power, oppressing anyone who dares to oppose them. Kenshiro returns from seclusion, joining the now-grown Bat and Lin under the banner of the Hokuto Army. As they fight their way into the Empire's capital city, they discover that the Empire has been taken over by the Viceroy Jakoh, a usurper who is keeping the real Celestial Empress captive in his dungeon. The Hokuto Army free the Empress and Jakoh is vanquished shortly afterwards.

However, Lin is taken captive by the remnants of Jakoh's forces and is sent off to the mysterious Kingdom of Shura, a brutal land of warriors ruled by three overlords who have all mastered the ways of Hokuto Ryūken , a martial art which branched off from the same clan alongside Hokuto Shinken into the ways of darkness. Kaioh , the head of the three overlords, plans to conquer the post-apocalyptic world in the name of evil by wiping out the followers of Hokuto Shinken . Kenshiro uncovers the sealed testament of the Hokuto Shinken founder, Shuken, which holds the secret to overcoming Kaioh's ultimate technique. Kenshiro emerges victorious over Kaioh and rescues Lin, leaving her under Bat's care.

During the final chapters, Kenshiro goes on a journey with Raoh's orphaned son Ryu, in order to lead him on the path to become the next Hokuto Shinken successor, encountering and battling various opponents along the way, before returning to Bat and Lin to protect them from a past enemy.